Working with United States Census Data Using tidycensus
library(tidycensus)
library(tidyverse)
census_api_key("YOUR API KEY GOES HERE")Inspect variables for Decennial Census
decennial_variables<-load_variables(2010,"sf1")
View(decennial_variables)| name | label | concept |
|---|---|---|
| H001001 | Total | HOUSING UNITS |
| H002001 | Total | URBAN AND RURAL |
| H002002 | Total!!Urban | URBAN AND RURAL |
| H002003 | Total!!Urban!!Inside urbanized areas | URBAN AND RURAL |
| H002004 | Total!!Urban!!Inside urban clusters | URBAN AND RURAL |
| H002005 | Total!!Rural | URBAN AND RURAL |
Calling and Manipulating Data using tidycensus and dplyr: Basics
Calling and Viewing Data
Let’s find out the population, by state, in 2010:
state_population_2010<-get_decennial(geography = "state",
variables = "P001001",
geometry=TRUE,
shift_geo = TRUE,
year = 2010)
View(state_population_2010)| GEOID | NAME | variable | value | geometry |
|---|---|---|---|---|
| 04 | Arizona | P001001 | 6392017 | MULTIPOLYGON (((-1111066 -8… |
| 05 | Arkansas | P001001 | 2915918 | MULTIPOLYGON (((557903.1 -1… |
| 06 | California | P001001 | 37253956 | MULTIPOLYGON (((-1853480 -9… |
| 08 | Colorado | P001001 | 5029196 | MULTIPOLYGON (((-613452.9 -… |
| 09 | Connecticut | P001001 | 3574097 | MULTIPOLYGON (((2226838 519… |
| 11 | District of Columbia | P001001 | 601723 | MULTIPOLYGON (((1960720 -41… |
We can adjust the geography and year parameters; let’s say we want the population distribution across CO counties in the year 2010:
CO_county_population_2010<-get_decennial(geography = "county",
state="CO",
variables = "P001001",
year = 2010)
View(CO_county_population_2010)| GEOID | NAME | variable | value |
|---|---|---|---|
| 08023 | Costilla County, Colorado | P001001 | 3524 |
| 08025 | Crowley County, Colorado | P001001 | 5823 |
| 08027 | Custer County, Colorado | P001001 | 4255 |
| 08029 | Delta County, Colorado | P001001 | 30952 |
| 08031 | Denver County, Colorado | P001001 | 600158 |
| 08035 | Douglas County, Colorado | P001001 | 285465 |
Cleaning and Manipulating Data Using dplyr
Let’s clean up the table by removing the “variable” column, and renaming the “value” column as “Population”, which we can do using functions from the “dplyr” package.
CO_county_population_2010<-get_decennial(geography = "county",
state="CO",
variables = "P001001",
year = 2000) %>%
mutate(variable=NULL) %>%
rename(population=value)
View(CO_county_population_2010)| GEOID | NAME | population |
|---|---|---|
| 08001 | Adams County, Colorado | 363857 |
| 08003 | Alamosa County, Colorado | 14966 |
| 08005 | Arapahoe County, Colorado | 487967 |
| 08007 | Archuleta County, Colorado | 9898 |
| 08009 | Baca County, Colorado | 4517 |
| 08011 | Bent County, Colorado | 5998 |
It’s also possible to call multiple variables into a single table. To see this, let’s add a field/column containing the rural population in each state in 2010 (as well as the total population in that year), and order the dataset in descending order with respect to the rural population (such that the state with the largest rural population will appear as the first record in the dataset):
state_pop_ruralpop_2010<-get_decennial(geography = "state",
variables = c("P001001", "P002005"),
output="wide",
year = 2010) %>%
rename(total_population=P001001, rural_population=P002005) %>%
arrange(desc(rural_population))
state_pop_ruralpop_2010| GEOID | NAME | total_population | rural_population |
|---|---|---|---|
| 48 | Texas | 25145561 | 3847522 |
| 37 | North Carolina | 9535483 | 3233727 |
| 42 | Pennsylvania | 12702379 | 2711092 |
| 39 | Ohio | 11536504 | 2546810 |
| 26 | Michigan | 9883640 | 2513683 |
| 13 | Georgia | 9687653 | 2415502 |
Let’s generate a new variable based on the variables we already have in the dataset. This variable will measure the percentage of each state’s population that are rural residents (calculated by dividing the rural population by the total population, and multiplying by 100). We’ll call this variable “rural_pct”. We’ll also resort the dataset, so that it’s sorted in descending order with respect to the new “rural_pct” variable, instead of the actual number of rural residents:
state_pop_ruralpop_2010<-
state_pop_ruralpop_2010 %>% mutate(rural_pct=(rural_population/total_population)*100) %>%
arrange(desc(rural_pct))
View(state_pop_ruralpop_2010)| GEOID | NAME | total_population | rural_population | rural_pct |
|---|---|---|---|---|
| 23 | Maine | 1328361 | 814819 | 61.34018 |
| 50 | Vermont | 625741 | 382356 | 61.10451 |
| 54 | West Virginia | 1852994 | 950184 | 51.27831 |
| 28 | Mississippi | 2967297 | 1503073 | 50.65462 |
| 30 | Montana | 989415 | 436401 | 44.10697 |
| 05 | Arkansas | 2915918 | 1278329 | 43.83968 |
The dplyr package also makes it easy to filter datasets based on specific criteria, which we can then assign to a new object. For example, let’s say that we want to generate a new dataset that only includes states whose rural populations are greater than 40% of their overall populations. We’ll assign this new dataset to an object called “rural_pct_over40”:
rural_pct_over40<-state_pop_ruralpop_2010 %>% filter(rural_pct>40)
View(rural_pct_over40)| GEOID | NAME | total_population | rural_population | rural_pct |
|---|---|---|---|---|
| 23 | Maine | 1328361 | 814819 | 61.34018 |
| 50 | Vermont | 625741 | 382356 | 61.10451 |
| 54 | West Virginia | 1852994 | 950184 | 51.27831 |
| 28 | Mississippi | 2967297 | 1503073 | 50.65462 |
| 30 | Montana | 989415 | 436401 | 44.10697 |
| 05 | Arkansas | 2915918 | 1278329 | 43.83968 |
| 46 | South Dakota | 814180 | 352933 | 43.34828 |
| 21 | Kentucky | 4339367 | 1806024 | 41.61953 |
| 01 | Alabama | 4779736 | 1957932 | 40.96318 |
| 38 | North Dakota | 672591 | 269719 | 40.10149 |
Student Exercise
Create a dataset of Colorado counties that had a rural population that exceeded 50% of the county’s overall population in 2010, and sort the dataset in descending order with respect to the field containing information on the percentage of the county’s rural resident’s. Your final dataset should look something like this:
| GEOID | NAME | total_population | rural_population | rural_pct |
|---|---|---|---|---|
| 08023 | Costilla County, Colorado | 3524 | 3524 | 100.00000 |
| 08025 | Crowley County, Colorado | 5823 | 5823 | 100.00000 |
| 08027 | Custer County, Colorado | 4255 | 4255 | 100.00000 |
| 08033 | Dolores County, Colorado | 2064 | 2064 | 100.00000 |
| 08039 | Elbert County, Colorado | 23086 | 23086 | 100.00000 |
| 08047 | Gilpin County, Colorado | 5441 | 5441 | 100.00000 |
| 08053 | Hinsdale County, Colorado | 843 | 843 | 100.00000 |
| 08057 | Jackson County, Colorado | 1394 | 1394 | 100.00000 |
| 08061 | Kiowa County, Colorado | 1398 | 1398 | 100.00000 |
| 08073 | Lincoln County, Colorado | 5467 | 5467 | 100.00000 |
| 08079 | Mineral County, Colorado | 712 | 712 | 100.00000 |
| 08091 | Ouray County, Colorado | 4436 | 4436 | 100.00000 |
| 08093 | Park County, Colorado | 16206 | 16206 | 100.00000 |
| 08095 | Phillips County, Colorado | 4442 | 4442 | 100.00000 |
| 08111 | San Juan County, Colorado | 699 | 699 | 100.00000 |
| 08109 | Saguache County, Colorado | 6108 | 6108 | 100.00000 |
| 08103 | Rio Blanco County, Colorado | 6666 | 6666 | 100.00000 |
| 08113 | San Miguel County, Colorado | 7359 | 7359 | 100.00000 |
| 08115 | Sedgwick County, Colorado | 2379 | 2379 | 100.00000 |
| 08121 | Washington County, Colorado | 4814 | 4814 | 100.00000 |
| 08009 | Baca County, Colorado | 3788 | 3788 | 100.00000 |
| 08021 | Conejos County, Colorado | 8256 | 8256 | 100.00000 |
| 08017 | Cheyenne County, Colorado | 1836 | 1836 | 100.00000 |
| 08019 | Clear Creek County, Colorado | 9088 | 9088 | 100.00000 |
| 08049 | Grand County, Colorado | 14843 | 12260 | 82.59786 |
| 08083 | Montezuma County, Colorado | 25535 | 17155 | 67.18230 |
| 08125 | Yuma County, Colorado | 10043 | 6519 | 64.91088 |
| 08029 | Delta County, Colorado | 30952 | 19553 | 63.17201 |
| 08119 | Teller County, Colorado | 23350 | 14618 | 62.60385 |
| 08105 | Rio Grande County, Colorado | 11982 | 7493 | 62.53547 |
| 08067 | La Plata County, Colorado | 51334 | 30774 | 59.94857 |
| 08007 | Archuleta County, Colorado | 12084 | 7175 | 59.37603 |
| 08051 | Gunnison County, Colorado | 15324 | 8981 | 58.60741 |
| 08055 | Huerfano County, Colorado | 6711 | 3768 | 56.14662 |
##More advanced data wrangling
##Iteration, Temporal Dynamics, and Exploratory Visualization
Let’s
my_years<-c(2000,2010)
population_rural_2000_2010<-map(
my_years,
~(get_decennial(geography = "state",
variables = c("P001001", "P002005"),
output="wide",
year =.)) %>%
mutate(rural_pct=(P002005/P001001)*100) %>%
arrange(NAME)
)## Getting data from the 2000 decennial Census## Using Census Summary File 1## Getting data from the 2010 decennial Census## Using Census Summary File 1names(population_rural_2000_2010)<-my_years
rural_change<-full_join(population_rural_2000_2010[["2000"]],
population_rural_2000_2010[["2010"]],by="NAME") %>%
mutate(rural_pct_change=rural_pct.y-rural_pct.x) %>%
select(NAME,rural_pct_change)
rural_change## # A tibble: 52 x 2
## NAME rural_pct_change
## <chr> <dbl>
## 1 Alabama -3.59
## 2 Alaska -0.421
## 3 Arizona -1.64
## 4 Arkansas -3.64
## 5 California -0.509
## 6 Colorado -1.68
## 7 Connecticut -0.252
## 8 Delaware -3.18
## 9 District of Columbia 0
## 10 Florida -1.88
## # … with 42 more rowsbasegraph<-rural_change %>%
ggplot(aes(x = reorder(NAME,rural_pct_change), y=rural_pct_change)) +
geom_col()+
coord_flip()
basegraph+labs(title="Rural Depopulation", x="State Name", y="Pct Change in Rural Population")+
theme(plot.title=element_text(hjust=0.5))
rural_depop_tomap<-full_join(state_population_2010,rural_change,by="NAME")
foundational_map<-tm_shape(rural_depop_tomap)+
tm_polygons(col="rural_pct_change", n=6,style="jenks",palette="BuGn", midpoint=TRUE)
foundational_map## Warning: The shape rural_depop_tomap contains empty units.
##custom breaks and title
revised_map<-tm_shape(rural_depop_tomap)+
tm_polygons(col="rural_pct_change", breaks=c(-6,-4,-2, 0, 1, 2),palette="YlGnBu", midpoint=TRUE)+
tm_layout(frame=FALSE, main.title="Percentage Point Change\nin Rural Population, By State",
main.title.position="left", legend.outside=TRUE)
revised_map## Warning: The shape rural_depop_tomap contains empty units.
Student Visualization Practice
Practice visualizing Census by doing ONE of the following: 1) make a map (using the tmap package) that shows county-level variation in the median age across the state of Colorado or 2) make a visualization (using the ggplot package) of state-level variation in the median age across the entire United States.
Option 1 Code
median_age_CO<- get_decennial(geography = "county",
state="CO",
variables = "P013001",
year = 2010,
geometry = TRUE) %>%
rename(median_age=value) %>%
relocate(NAME)median_age_CO_map<-tm_shape(median_age_CO)+
tm_polygons(col="median_age",breaks=c(30,35,40,45,50),palette="YlGnBu", midpoint=TRUE)+
tm_layout(frame=FALSE, main.title="Median Age by County,\nColorado",
main.title.position="left", legend.outside=TRUE)
median_age_CO_map
Making a Web Map
tmap_mode("view")
median_age_CO_mapOption 2 Code
median_age_CO_visualization<-
median_age_CO %>%
ggplot(aes(x = median_age, y = reorder(NAME, median_age))) +
geom_point()+
labs(title="Median Age by County, CO", x="Median Age", y="County Name")+
theme(plot.title=element_text(hjust=0.5))
median_age_CO_visualization
median_age_CO_cleaned<-median_age_CO %>%
mutate(County_Name=str_remove_all(NAME,"Colorado|,|County"))
median_age_CO_cleaned_visualization<-
median_age_CO_cleaned %>%
ggplot(aes(x = median_age, y = reorder(County_Name, median_age))) +
geom_point()+
labs(title="Median Age by County, CO", x="Median Age", y="County")+
theme(plot.title=element_text(hjust=0.5))
median_age_CO_cleaned_visualization
American Community Survey
Calling ACS Data
To inspect the variable list for the ACS, use the “load variables” function. Let’s say we want to work with the 5-year ACS ending in 2019:
ACS_5_2019<-load_variables(2019,"acs5")
View(ACS_5_2019)| name | label | concept |
|---|---|---|
| B01001_001 | Estimate!!Total: | SEX BY AGE |
| B01001_002 | Estimate!!Total:!!Male: | SEX BY AGE |
| B01001_003 | Estimate!!Total:!!Male:!!Under 5 years | SEX BY AGE |
| B01001_004 | Estimate!!Total:!!Male:!!5 to 9 years | SEX BY AGE |
| B01001_005 | Estimate!!Total:!!Male:!!10 to 14 years | SEX BY AGE |
| B01001_006 | Estimate!!Total:!!Male:!!15 to 17 years | SEX BY AGE |
Let’s issue a call to the API and generate a table that gives us the median-income of the United States by county. We may want to eventually have the option of mapping this data, so we’ll set the geometry parameter equal to TRUE. Note that when using the “get_acs” function call, the default setting will return data from the 5-year ACS that terminates in the specified year (i.e. if the year parameter is set to 2019, the function will return the 2015-2019 ACS). If we want to call the 1 year or 3 year ACS, the “survey” argument of the “get_acs” function could be set to “acs1” or “acs3”, depending on which survey we are interested in calling.
median_income<-get_acs(geography="county",
variables="B19013_001",
year=2019,
geometry=TRUE,
shift_geo=TRUE) %>%
rename(median_income=estimate) %>%
arrange(desc(median_income))
View(median_income)| GEOID | NAME | variable | median_income | moe | geometry |
|---|---|---|---|---|---|
| 51107 | Loudoun County, Virginia | B19013_001 | 142299 | 2089 | MULTIPOLYGON (((1906352 -41… |
| 51610 | Falls Church city, Virginia | B19013_001 | 127610 | 16144 | MULTIPOLYGON (((1949973 -40… |
| 51059 | Fairfax County, Virginia | B19013_001 | 124831 | 1281 | MULTIPOLYGON (((1956587 -41… |
| 06085 | Santa Clara County, California | B19013_001 | 124055 | 1117 | MULTIPOLYGON (((-1902539 -6… |
| 06081 | San Mateo County, California | B19013_001 | 122641 | 1680 | MULTIPOLYGON (((-1952774 -6… |
| 35028 | Los Alamos County, New Mexico | B19013_001 | 121324 | 4613 | MULTIPOLYGON (((-565023.3 -… |
Manipulating and Visualizing ACS Data: dplyr’s “group_by” and “slice” functions, and visualizing uncertainty using ggplot
Let’s say that we want to generate a table that contains the highest median-income county for each state. To do so, we will use dplyr’s “group_by” and “slice” functions, after separating out the “Name” field in the existing table (which is in the form “County Name, State”) into separate “County” and “State” fields:
highest_income_counties<-median_income %>%
separate(NAME,c("County","State"),sep=",") %>%
group_by(State) %>%
arrange(desc(median_income)) %>%
slice(1) %>%
unite(NAME, c("County","State"), remove=FALSE, sep=",")
View(highest_income_counties)kable(highest_income_counties) | GEOID | NAME | County | State | variable | median_income | moe | geometry |
|---|---|---|---|---|---|---|---|
| 01117 | Shelby County, Alabama | Shelby County | Alabama | B19013_001 | 77799 | 2248 | MULTIPOLYGON (((1207383 -12… |
| 02110 | Juneau City and Borough, Alaska | Juneau City and Borough | Alaska | B19013_001 | 88390 | 4059 | MULTIPOLYGON (((-780061.4 -… |
| 04013 | Maricopa County, Arizona | Maricopa County | Arizona | B19013_001 | 64468 | 326 | MULTIPOLYGON (((-1075618 -1… |
| 05007 | Benton County, Arkansas | Benton County | Arkansas | B19013_001 | 66362 | 1292 | MULTIPOLYGON (((490499.7 -9… |
| 06085 | Santa Clara County, California | Santa Clara County | California | B19013_001 | 124055 | 1117 | MULTIPOLYGON (((-1902539 -6… |
| 08035 | Douglas County, Colorado | Douglas County | Colorado | B19013_001 | 119730 | 1710 | MULTIPOLYGON (((-432929.3 -… |
| 09001 | Fairfield County, Connecticut | Fairfield County | Connecticut | B19013_001 | 95645 | 1039 | MULTIPOLYGON (((2153259 -17… |
| 10003 | New Castle County, Delaware | New Castle County | Delaware | B19013_001 | 73892 | 1210 | MULTIPOLYGON (((2058738 -29… |
| 11001 | District of Columbia, District of Columbia | District of Columbia | District of Columbia | B19013_001 | 86420 | 1008 | MULTIPOLYGON (((1960720 -41… |
| 12109 | St. Johns County, Florida | St. Johns County | Florida | B19013_001 | 82252 | 2741 | MULTIPOLYGON (((1768025 -14… |
| 13117 | Forsyth County, Georgia | Forsyth County | Georgia | B19013_001 | 107218 | 2004 | MULTIPOLYGON (((1441485 -10… |
| 15003 | Honolulu County, Hawaii | Honolulu County | Hawaii | B19013_001 | 85857 | 907 | MULTIPOLYGON (((-481727.5 -… |
| 16081 | Teton County, Idaho | Teton County | Idaho | B19013_001 | 74216 | 3576 | MULTIPOLYGON (((-880601 -53… |
| 17093 | Kendall County, Illinois | Kendall County | Illinois | B19013_001 | 96563 | 4721 | MULTIPOLYGON (((970466.8 -2… |
| 18057 | Hamilton County, Indiana | Hamilton County | Indiana | B19013_001 | 98173 | 2249 | MULTIPOLYGON (((1173473 -46… |
| 19049 | Dallas County, Iowa | Dallas County | Iowa | B19013_001 | 88479 | 3234 | MULTIPOLYGON (((473355.5 -3… |
| 20091 | Johnson County, Kansas | Johnson County | Kansas | B19013_001 | 89087 | 998 | MULTIPOLYGON (((467219 -668… |
| 21185 | Oldham County, Kentucky | Oldham County | Kentucky | B19013_001 | 99128 | 3974 | MULTIPOLYGON (((1262586 -63… |
| 22005 | Ascension Parish, Louisiana | Ascension Parish | Louisiana | B19013_001 | 80527 | 3017 | MULTIPOLYGON (((861410.4 -1… |
| 23005 | Cumberland County, Maine | Cumberland County | Maine | B19013_001 | 73072 | 1427 | MULTIPOLYGON (((2332898 298… |
| 24027 | Howard County, Maryland | Howard County | Maryland | B19013_001 | 121160 | 2169 | MULTIPOLYGON (((1938398 -36… |
| 25019 | Nantucket County, Massachusetts | Nantucket County | Massachusetts | B19013_001 | 107717 | 5735 | MULTIPOLYGON (((2431244 400… |
| 26093 | Livingston County, Michigan | Livingston County | Michigan | B19013_001 | 84221 | 1674 | MULTIPOLYGON (((1320579 -11… |
| 27139 | Scott County, Minnesota | Scott County | Minnesota | B19013_001 | 102152 | 3021 | MULTIPOLYGON (((525638.1 -1… |
| 28089 | Madison County, Mississippi | Madison County | Mississippi | B19013_001 | 71824 | 2728 | MULTIPOLYGON (((961529.6 -1… |
| 29183 | St. Charles County, Missouri | St. Charles County | Missouri | B19013_001 | 84978 | 1195 | MULTIPOLYGON (((817474.5 -6… |
| 30043 | Jefferson County, Montana | Jefferson County | Montana | B19013_001 | 69646 | 4258 | MULTIPOLYGON (((-899443.3 1… |
| 31153 | Sarpy County, Nebraska | Sarpy County | Nebraska | B19013_001 | 82032 | 1552 | MULTIPOLYGON (((341452 -429… |
| 32015 | Lander County, Nevada | Lander County | Nevada | B19013_001 | 88030 | 21398 | MULTIPOLYGON (((-1450087 -3… |
| 33015 | Rockingham County, New Hampshire | Rockingham County | New Hampshire | B19013_001 | 93756 | 1893 | MULTIPOLYGON (((2305592 212… |
| 34027 | Morris County, New Jersey | Morris County | New Jersey | B19013_001 | 115527 | 1813 | MULTIPOLYGON (((2080464 -13… |
| 35028 | Los Alamos County, New Mexico | Los Alamos County | New Mexico | B19013_001 | 121324 | 4613 | MULTIPOLYGON (((-565023.3 -… |
| 36059 | Nassau County, New York | Nassau County | New York | B19013_001 | 116100 | 1093 | MULTIPOLYGON (((2171497 -13… |
| 37183 | Wake County, North Carolina | Wake County | North Carolina | B19013_001 | 80591 | 822 | MULTIPOLYGON (((1940120 -76… |
| 38105 | Williams County, North Dakota | Williams County | North Dakota | B19013_001 | 87161 | 7443 | MULTIPOLYGON (((-298796 384… |
| 39041 | Delaware County, Ohio | Delaware County | Ohio | B19013_001 | 106908 | 2786 | MULTIPOLYGON (((1451197 -37… |
| 40017 | Canadian County, Oklahoma | Canadian County | Oklahoma | B19013_001 | 72056 | 1690 | MULTIPOLYGON (((211597.9 -1… |
| 41067 | Washington County, Oregon | Washington County | Oregon | B19013_001 | 82215 | 997 | MULTIPOLYGON (((-1743904 30… |
| 42029 | Chester County, Pennsylvania | Chester County | Pennsylvania | B19013_001 | 100214 | 1232 | MULTIPOLYGON (((2060174 -23… |
| 44009 | Washington County, Rhode Island | Washington County | Rhode Island | B19013_001 | 85531 | 2042 | MULTIPOLYGON (((2319619 -14… |
| 45013 | Beaufort County, South Carolina | Beaufort County | South Carolina | B19013_001 | 68377 | 1987 | MULTIPOLYGON (((1785885 -11… |
| 46083 | Lincoln County, South Dakota | Lincoln County | South Dakota | B19013_001 | 82473 | 2951 | MULTIPOLYGON (((276504.4 -1… |
| 47187 | Williamson County, Tennessee | Williamson County | Tennessee | B19013_001 | 112962 | 2976 | MULTIPOLYGON (((1150429 -92… |
| 48397 | Rockwall County, Texas | Rockwall County | Texas | B19013_001 | 100920 | 4011 | MULTIPOLYGON (((327048.3 -1… |
| 49043 | Summit County, Utah | Summit County | Utah | B19013_001 | 102958 | 5613 | MULTIPOLYGON (((-920528.2 -… |
| 50007 | Chittenden County, Vermont | Chittenden County | Vermont | B19013_001 | 73647 | 2249 | MULTIPOLYGON (((2092685 314… |
| 51107 | Loudoun County, Virginia | Loudoun County | Virginia | B19013_001 | 142299 | 2089 | MULTIPOLYGON (((1906352 -41… |
| 53033 | King County, Washington | King County | Washington | B19013_001 | 94974 | 726 | MULTIPOLYGON (((-1661250 51… |
| 54037 | Jefferson County, West Virginia | Jefferson County | West Virginia | B19013_001 | 80430 | 3750 | MULTIPOLYGON (((1878385 -35… |
| 55133 | Waukesha County, Wisconsin | Waukesha County | Wisconsin | B19013_001 | 87277 | 1110 | MULTIPOLYGON (((929187.5 -1… |
| 56039 | Teton County, Wyoming | Teton County | Wyoming | B19013_001 | 84678 | 8230 | MULTIPOLYGON (((-879496.6 -… |
If we want to visualize this information, we can incorporate the MOE for these estimates into the visualization, so that we can convey the uncertainty surrounding these median income estimates.
highest_income_counties_viz<-highest_income_counties %>%
ggplot(aes(x=median_income,y=reorder(NAME, median_income)))+
geom_errorbarh(aes(xmin = median_income - moe, xmax = median_income + moe)) +
geom_point(color = "red", size = 3)+
labs(title="County with Highest Median Income, by State",
y="",
x="Median Income Estimate from ACS (bars indicate margin of error)")
highest_income_counties_viz 
student exercise where they do same for the lowest
correlation between income and election results
correlation between health insurance and covid
across the state of Colorado in the year 2010 OR 2) A visualization of county-level
Additional Work with Dplyr and Visualization
##county median age map?
Appendix
my_years<-c(2000,2010)
population_rural_2000_2010<-map(
my_years,
~(get_decennial(geography = "state",
variables = c("P001001", "P002005"),
output="wide",
year =.)) %>%
mutate(rural_pct=(P002005/P001001)*100) %>%
arrange(NAME)
)## Getting data from the 2000 decennial Census## Using Census Summary File 1## Getting data from the 2010 decennial Census## Using Census Summary File 1names(population_rural_2000_2010)<-my_years
joined_ds<-full_join(population_rural_2000_2010[["2000"]],population_rural_2000_2010[["2010"]],by="NAME") %>%
mutate(pct_change=rural_pct.y-rural_pct.x) %>%
select(NAME,pct_change)
joined_ds## # A tibble: 52 x 2
## NAME pct_change
## <chr> <dbl>
## 1 Alabama -3.59
## 2 Alaska -0.421
## 3 Arizona -1.64
## 4 Arkansas -3.64
## 5 California -0.509
## 6 Colorado -1.68
## 7 Connecticut -0.252
## 8 Delaware -3.18
## 9 District of Columbia 0
## 10 Florida -1.88
## # … with 42 more rows